* {
  margin: 0;
  padding: 0;
}
/* body {
  overflow-x: hidden;
} */
/* 取消列表符号 */
ul,
li,
ol {
  list-style: none;
}
/* 取消划线 */
a {
  text-decoration: none;
}
/* 解决图片3px */
img {
  display: block;
}
/* 取消加粗 */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: normal;
}
/* 取消倾斜 */
em,
i {
  font-style: normal;
}
/* 取消边框 */
input {
  border: none;
  background: none;
  outline: none;
}

/* 左浮动 */
.fl {
  float: left;
}
/* 右浮动 */
.fr {
  float: right;
}

/* 高度塌陷 */
.clean:after {
  content: ".";
  display: block;
  clear: both;
  height: 0;
  overflow: hidden;
  visibility: hidden;
}
/* 兼容ie */
.clean {
  zoom: 1;
}
